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include/linux/mm.h
55 KB
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#ifndef _LINUX_MM_H #define _LINUX_MM_H |
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#include <linux/errno.h> #ifdef __KERNEL__ |
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#include <linux/gfp.h> #include <linux/list.h> #include <linux/mmzone.h> #include <linux/rbtree.h> #include <linux/prio_tree.h> |
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#include <linux/atomic.h> |
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#include <linux/debug_locks.h> |
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#include <linux/mm_types.h> |
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#include <linux/range.h> |
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#include <linux/pfn.h> |
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#include <linux/bit_spinlock.h> |
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#include <linux/shrinker.h> |
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struct mempolicy; struct anon_vma; |
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struct file_ra_state; |
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struct user_struct; |
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struct writeback_control; |
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#ifndef CONFIG_DISCONTIGMEM /* Don't use mapnrs, do it properly */ extern unsigned long max_mapnr; #endif extern unsigned long num_physpages; |
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extern unsigned long totalram_pages; |
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extern void * high_memory; |
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extern int page_cluster; #ifdef CONFIG_SYSCTL extern int sysctl_legacy_va_layout; #else #define sysctl_legacy_va_layout 0 #endif #include <asm/page.h> #include <asm/pgtable.h> #include <asm/processor.h> |
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#define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n)) |
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/* to align the pointer to the (next) page boundary */ #define PAGE_ALIGN(addr) ALIGN(addr, PAGE_SIZE) |
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/* * Linux kernel virtual memory manager primitives. * The idea being to have a "virtual" mm in the same way * we have a virtual fs - giving a cleaner interface to the * mm details, and allowing different kinds of memory mappings * (from shared memory to executable loading to arbitrary * mmap() functions). */ |
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extern struct kmem_cache *vm_area_cachep; |
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#ifndef CONFIG_MMU |
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extern struct rb_root nommu_region_tree; extern struct rw_semaphore nommu_region_sem; |
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extern unsigned int kobjsize(const void *objp); #endif /* |
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* vm_flags in vm_area_struct, see mm_types.h. |
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*/ #define VM_READ 0x00000001 /* currently active flags */ #define VM_WRITE 0x00000002 #define VM_EXEC 0x00000004 #define VM_SHARED 0x00000008 |
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/* mprotect() hardcodes VM_MAYREAD >> 4 == VM_READ, and so for r/w/x bits. */ |
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#define VM_MAYREAD 0x00000010 /* limits for mprotect() etc */ #define VM_MAYWRITE 0x00000020 #define VM_MAYEXEC 0x00000040 #define VM_MAYSHARE 0x00000080 #define VM_GROWSDOWN 0x00000100 /* general info on the segment */ |
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#if defined(CONFIG_STACK_GROWSUP) || defined(CONFIG_IA64) |
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#define VM_GROWSUP 0x00000200 |
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#else #define VM_GROWSUP 0x00000000 |
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#define VM_NOHUGEPAGE 0x00000200 /* MADV_NOHUGEPAGE marked this vma */ |
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#endif |
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#define VM_PFNMAP 0x00000400 /* Page-ranges managed without "struct page", just pure PFN */ |
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#define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */ #define VM_EXECUTABLE 0x00001000 #define VM_LOCKED 0x00002000 #define VM_IO 0x00004000 /* Memory mapped I/O or similar */ /* Used by sys_madvise() */ #define VM_SEQ_READ 0x00008000 /* App will access data sequentially */ #define VM_RAND_READ 0x00010000 /* App will not benefit from clustered reads */ #define VM_DONTCOPY 0x00020000 /* Do not copy this vma on fork */ #define VM_DONTEXPAND 0x00040000 /* Cannot expand with mremap() */ |
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#define VM_RESERVED 0x00080000 /* Count as reserved_vm like IO */ |
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#define VM_ACCOUNT 0x00100000 /* Is a VM accounted object */ |
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#define VM_NORESERVE 0x00200000 /* should the VM suppress accounting */ |
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#define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */ #define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */ |
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#ifndef CONFIG_TRANSPARENT_HUGEPAGE |
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#define VM_MAPPED_COPY 0x01000000 /* T if mapped copy of data (nommu mmap) */ |
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#else #define VM_HUGEPAGE 0x01000000 /* MADV_HUGEPAGE marked this vma */ #endif |
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#define VM_INSERTPAGE 0x02000000 /* The vma has had "vm_insert_page()" done on it */ |
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#define VM_ALWAYSDUMP 0x04000000 /* Always include in core dumps */ |
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#define VM_CAN_NONLINEAR 0x08000000 /* Has ->fault & does nonlinear pages */ |
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#define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ |
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#define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */ |
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#define VM_PFN_AT_MMAP 0x40000000 /* PFNMAP vma that is fully mapped at mmap time */ |
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#define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ |
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/* Bits set in the VMA until the stack is in its final location */ #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ) |
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#ifndef VM_STACK_DEFAULT_FLAGS /* arch can override this */ #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS #endif #ifdef CONFIG_STACK_GROWSUP #define VM_STACK_FLAGS (VM_GROWSUP | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT) #else #define VM_STACK_FLAGS (VM_GROWSDOWN | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT) #endif #define VM_READHINTMASK (VM_SEQ_READ | VM_RAND_READ) #define VM_ClearReadHint(v) (v)->vm_flags &= ~VM_READHINTMASK #define VM_NormalReadHint(v) (!((v)->vm_flags & VM_READHINTMASK)) #define VM_SequentialReadHint(v) ((v)->vm_flags & VM_SEQ_READ) #define VM_RandomReadHint(v) ((v)->vm_flags & VM_RAND_READ) /* |
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* Special vmas that are non-mergable, non-mlock()able. * Note: mm/huge_memory.c VM_NO_THP depends on this definition. |
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*/ #define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_PFNMAP) /* |
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* mapping from the currently active vm_flags protection bits (the * low four bits) to a page protection mask.. */ extern pgprot_t protection_map[16]; |
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#define FAULT_FLAG_WRITE 0x01 /* Fault was a write access */ #define FAULT_FLAG_NONLINEAR 0x02 /* Fault was via a nonlinear mapping */ |
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#define FAULT_FLAG_MKWRITE 0x04 /* Fault was mkwrite of existing pte */ |
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#define FAULT_FLAG_ALLOW_RETRY 0x08 /* Retry fault if blocking */ |
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#define FAULT_FLAG_RETRY_NOWAIT 0x10 /* Don't drop mmap_sem and wait when retrying */ |
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#define FAULT_FLAG_KILLABLE 0x20 /* The fault task is in SIGKILL killable region */ |
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/* * This interface is used by x86 PAT code to identify a pfn mapping that is * linear over entire vma. This is to optimize PAT code that deals with * marking the physical region with a particular prot. This is not for generic * mm use. Note also that this check will not work if the pfn mapping is * linear for a vma starting at physical address 0. In which case PAT code * falls back to slow path of reserving physical range page by page. */ |
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static inline int is_linear_pfn_mapping(struct vm_area_struct *vma) { |
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return !!(vma->vm_flags & VM_PFN_AT_MMAP); |
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} static inline int is_pfn_mapping(struct vm_area_struct *vma) { |
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return !!(vma->vm_flags & VM_PFNMAP); |
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} |
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/* |
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* vm_fault is filled by the the pagefault handler and passed to the vma's |
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* ->fault function. The vma's ->fault is responsible for returning a bitmask * of VM_FAULT_xxx flags that give details about how the fault was handled. |
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* |
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* pgoff should be used in favour of virtual_address, if possible. If pgoff * is used, one may set VM_CAN_NONLINEAR in the vma->vm_flags to get nonlinear * mapping support. |
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*/ |
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struct vm_fault { unsigned int flags; /* FAULT_FLAG_xxx flags */ pgoff_t pgoff; /* Logical page offset based on vma */ void __user *virtual_address; /* Faulting virtual address */ struct page *page; /* ->fault handlers should return a |
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* page here, unless VM_FAULT_NOPAGE |
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* is set (which is also implied by |
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* VM_FAULT_ERROR). |
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*/ |
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}; |
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/* * These are the virtual MM functions - opening of an area, closing and * unmapping it (needed to keep files on disk up-to-date etc), pointer * to the functions called when a no-page or a wp-page exception occurs. */ struct vm_operations_struct { void (*open)(struct vm_area_struct * area); void (*close)(struct vm_area_struct * area); |
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int (*fault)(struct vm_area_struct *vma, struct vm_fault *vmf); |
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/* notification that a previously read-only page is about to become * writable, if an error is returned it will cause a SIGBUS */ |
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int (*page_mkwrite)(struct vm_area_struct *vma, struct vm_fault *vmf); |
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/* called by access_process_vm when get_user_pages() fails, typically * for use by special VMAs that can switch between memory and hardware */ int (*access)(struct vm_area_struct *vma, unsigned long addr, void *buf, int len, int write); |
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#ifdef CONFIG_NUMA |
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/* * set_policy() op must add a reference to any non-NULL @new mempolicy * to hold the policy upon return. Caller should pass NULL @new to * remove a policy and fall back to surrounding context--i.e. do not * install a MPOL_DEFAULT policy, nor the task or system default * mempolicy. */ |
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int (*set_policy)(struct vm_area_struct *vma, struct mempolicy *new); |
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/* * get_policy() op must add reference [mpol_get()] to any policy at * (vma,addr) marked as MPOL_SHARED. The shared policy infrastructure * in mm/mempolicy.c will do this automatically. * get_policy() must NOT add a ref if the policy at (vma,addr) is not * marked as MPOL_SHARED. vma policies are protected by the mmap_sem. * If no [shared/vma] mempolicy exists at the addr, get_policy() op * must return NULL--i.e., do not "fallback" to task or system default * policy. */ |
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struct mempolicy *(*get_policy)(struct vm_area_struct *vma, unsigned long addr); |
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int (*migrate)(struct vm_area_struct *vma, const nodemask_t *from, const nodemask_t *to, unsigned long flags); |
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#endif }; struct mmu_gather; struct inode; |
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#define page_private(page) ((page)->private) #define set_page_private(page, v) ((page)->private = (v)) |
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/* * FIXME: take this include out, include page-flags.h in * files which need it (119 of them) */ #include <linux/page-flags.h> |
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#include <linux/huge_mm.h> |
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/* * Methods to modify the page usage count. * * What counts for a page usage: * - cache mapping (page->mapping) * - private data (page->private) * - page mapped in a task's page tables, each mapping * is counted separately * * Also, many kernel routines increase the page count before a critical * routine so they can be sure the page doesn't go away from under them. |
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*/ /* |
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* Drop a ref, return true if the refcount fell to zero (the page has no users) |
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*/ |
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static inline int put_page_testzero(struct page *page) { |
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VM_BUG_ON(atomic_read(&page->_count) == 0); |
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return atomic_dec_and_test(&page->_count); |
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} |
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/* |
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* Try to grab a ref unless the page has a refcount of zero, return false if * that is the case. |
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*/ |
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static inline int get_page_unless_zero(struct page *page) { |
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return atomic_inc_not_zero(&page->_count); |
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} |
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extern int page_is_ram(unsigned long pfn); |
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/* Support for virtually mapped pages */ |
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struct page *vmalloc_to_page(const void *addr); unsigned long vmalloc_to_pfn(const void *addr); |
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/* * Determine if an address is within the vmalloc range * * On nommu, vmalloc/vfree wrap through kmalloc/kfree directly, so there * is no special casing required. */ |
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static inline int is_vmalloc_addr(const void *x) { |
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#ifdef CONFIG_MMU |
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unsigned long addr = (unsigned long)x; return addr >= VMALLOC_START && addr < VMALLOC_END; |
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#else return 0; |
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#endif |
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} |
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#ifdef CONFIG_MMU extern int is_vmalloc_or_module_addr(const void *x); #else |
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static inline int is_vmalloc_or_module_addr(const void *x) |
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{ return 0; } #endif |
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static inline void compound_lock(struct page *page) { #ifdef CONFIG_TRANSPARENT_HUGEPAGE bit_spin_lock(PG_compound_lock, &page->flags); #endif } static inline void compound_unlock(struct page *page) { #ifdef CONFIG_TRANSPARENT_HUGEPAGE bit_spin_unlock(PG_compound_lock, &page->flags); #endif } static inline unsigned long compound_lock_irqsave(struct page *page) { unsigned long uninitialized_var(flags); #ifdef CONFIG_TRANSPARENT_HUGEPAGE local_irq_save(flags); compound_lock(page); #endif return flags; } static inline void compound_unlock_irqrestore(struct page *page, unsigned long flags) { #ifdef CONFIG_TRANSPARENT_HUGEPAGE compound_unlock(page); local_irq_restore(flags); #endif } |
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static inline struct page *compound_head(struct page *page) { |
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if (unlikely(PageTail(page))) |
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return page->first_page; return page; } |
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/* * The atomic page->_mapcount, starts from -1: so that transitions * both from it and to it can be tracked, using atomic_inc_and_test * and atomic_add_negative(-1). */ static inline void reset_page_mapcount(struct page *page) { atomic_set(&(page)->_mapcount, -1); } static inline int page_mapcount(struct page *page) { return atomic_read(&(page)->_mapcount) + 1; } |
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static inline int page_count(struct page *page) |
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{ |
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return atomic_read(&compound_head(page)->_count); |
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} |
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static inline void get_huge_page_tail(struct page *page) { /* * __split_huge_page_refcount() cannot run * from under us. */ VM_BUG_ON(page_mapcount(page) < 0); VM_BUG_ON(atomic_read(&page->_count) != 0); atomic_inc(&page->_mapcount); } |
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extern bool __get_page_tail(struct page *page); |
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static inline void get_page(struct page *page) { |
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if (unlikely(PageTail(page))) if (likely(__get_page_tail(page))) return; |
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/* * Getting a normal page or the head of a compound page |
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* requires to already have an elevated page->_count. |
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*/ |
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VM_BUG_ON(atomic_read(&page->_count) <= 0); |
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atomic_inc(&page->_count); } |
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static inline struct page *virt_to_head_page(const void *x) { struct page *page = virt_to_page(x); return compound_head(page); } |
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/* * Setup the page count before being freed into the page allocator for * the first time (boot or memory hotplug) */ static inline void init_page_count(struct page *page) { atomic_set(&page->_count, 1); } |
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/* * PageBuddy() indicate that the page is free and in the buddy system * (see mm/page_alloc.c). |
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* * PAGE_BUDDY_MAPCOUNT_VALUE must be <= -2 but better not too close to * -2 so that an underflow of the page_mapcount() won't be mistaken * for a genuine PAGE_BUDDY_MAPCOUNT_VALUE. -128 can be created very * efficiently by most CPU architectures. |
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*/ |
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#define PAGE_BUDDY_MAPCOUNT_VALUE (-128) |
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static inline int PageBuddy(struct page *page) { |
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return atomic_read(&page->_mapcount) == PAGE_BUDDY_MAPCOUNT_VALUE; |
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} static inline void __SetPageBuddy(struct page *page) { VM_BUG_ON(atomic_read(&page->_mapcount) != -1); |
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atomic_set(&page->_mapcount, PAGE_BUDDY_MAPCOUNT_VALUE); |
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} static inline void __ClearPageBuddy(struct page *page) { VM_BUG_ON(!PageBuddy(page)); atomic_set(&page->_mapcount, -1); } |
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void put_page(struct page *page); |
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void put_pages_list(struct list_head *pages); |
1da177e4c Linux-2.6.12-rc2 |
429 |
|
8dfcc9ba2 [PATCH] mm: split... |
430 |
void split_page(struct page *page, unsigned int order); |
748446bb6 mm: compaction: m... |
431 |
int split_free_page(struct page *page); |
8dfcc9ba2 [PATCH] mm: split... |
432 |
|
1da177e4c Linux-2.6.12-rc2 |
433 |
/* |
33f2ef89f [PATCH] mm: make ... |
434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 |
* Compound pages have a destructor function. Provide a * prototype for that function and accessor functions. * These are _only_ valid on the head of a PG_compound page. */ typedef void compound_page_dtor(struct page *); static inline void set_compound_page_dtor(struct page *page, compound_page_dtor *dtor) { page[1].lru.next = (void *)dtor; } static inline compound_page_dtor *get_compound_page_dtor(struct page *page) { return (compound_page_dtor *)page[1].lru.next; } |
d85f33855 Make page->privat... |
450 451 |
static inline int compound_order(struct page *page) { |
6d7779538 mm: optimize comp... |
452 |
if (!PageHead(page)) |
d85f33855 Make page->privat... |
453 454 455 |
return 0; return (unsigned long)page[1].lru.prev; } |
37c2ac787 thp: compound_tra... |
456 457 458 459 460 461 462 463 464 465 466 467 468 |
static inline int compound_trans_order(struct page *page) { int order; unsigned long flags; if (!PageHead(page)) return 0; flags = compound_lock_irqsave(page); order = compound_order(page); compound_unlock_irqrestore(page, flags); return order; } |
d85f33855 Make page->privat... |
469 470 471 472 |
static inline void set_compound_order(struct page *page, unsigned long order) { page[1].lru.prev = (void *)order; } |
3dece370e mm: System withou... |
473 |
#ifdef CONFIG_MMU |
33f2ef89f [PATCH] mm: make ... |
474 |
/* |
14fd403f2 thp: export maybe... |
475 476 477 478 479 480 481 482 483 484 485 |
* Do pte_mkwrite, but only if the vma says VM_WRITE. We do this when * servicing faults for write access. In the normal case, do always want * pte_mkwrite. But get_user_pages can cause write faults for mappings * that do not have writing enabled, when used by access_process_vm. */ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma) { if (likely(vma->vm_flags & VM_WRITE)) pte = pte_mkwrite(pte); return pte; } |
3dece370e mm: System withou... |
486 |
#endif |
14fd403f2 thp: export maybe... |
487 488 |
/* |
1da177e4c Linux-2.6.12-rc2 |
489 490 491 492 493 494 |
* Multiple processes may "see" the same page. E.g. for untouched * mappings of /dev/null, all processes see the same page full of * zeroes, and text pages of executables and shared libraries have * only one copy in memory, at most, normally. * * For the non-reserved pages, page_count(page) denotes a reference count. |
7e871b6c8 [PATCH] mm: updat... |
495 496 |
* page_count() == 0 means the page is free. page->lru is then used for * freelist management in the buddy allocator. |
da6052f7b [PATCH] update so... |
497 |
* page_count() > 0 means the page has been allocated. |
1da177e4c Linux-2.6.12-rc2 |
498 |
* |
da6052f7b [PATCH] update so... |
499 500 501 502 503 |
* Pages are allocated by the slab allocator in order to provide memory * to kmalloc and kmem_cache_alloc. In this case, the management of the * page, and the fields in 'struct page' are the responsibility of mm/slab.c * unless a particular usage is carefully commented. (the responsibility of * freeing the kmalloc memory is the caller's, of course). |
1da177e4c Linux-2.6.12-rc2 |
504 |
* |
da6052f7b [PATCH] update so... |
505 506 507 508 509 510 511 512 513 |
* A page may be used by anyone else who does a __get_free_page(). * In this case, page_count still tracks the references, and should only * be used through the normal accessor functions. The top bits of page->flags * and page->virtual store page management information, but all other fields * are unused and could be used privately, carefully. The management of this * page is the responsibility of the one who allocated it, and those who have * subsequently been given references to it. * * The other pages (we may call them "pagecache pages") are completely |
1da177e4c Linux-2.6.12-rc2 |
514 515 516 |
* managed by the Linux memory manager: I/O, buffers, swapping etc. * The following discussion applies only to them. * |
da6052f7b [PATCH] update so... |
517 518 519 520 |
* A pagecache page contains an opaque `private' member, which belongs to the * page's address_space. Usually, this is the address of a circular list of * the page's disk buffers. PG_private must be set to tell the VM to call * into the filesystem to release these pages. |
1da177e4c Linux-2.6.12-rc2 |
521 |
* |
da6052f7b [PATCH] update so... |
522 523 524 |
* A page may belong to an inode's memory mapping. In this case, page->mapping * is the pointer to the inode, and page->index is the file offset of the page, * in units of PAGE_CACHE_SIZE. |
1da177e4c Linux-2.6.12-rc2 |
525 |
* |
da6052f7b [PATCH] update so... |
526 527 528 |
* If pagecache pages are not associated with an inode, they are said to be * anonymous pages. These may become associated with the swapcache, and in that * case PG_swapcache is set, and page->private is an offset into the swapcache. |
1da177e4c Linux-2.6.12-rc2 |
529 |
* |
da6052f7b [PATCH] update so... |
530 531 532 |
* In either case (swapcache or inode backed), the pagecache itself holds one * reference to the page. Setting PG_private should also increment the * refcount. The each user mapping also has a reference to the page. |
1da177e4c Linux-2.6.12-rc2 |
533 |
* |
da6052f7b [PATCH] update so... |
534 535 536 537 |
* The pagecache pages are stored in a per-mapping radix tree, which is * rooted at mapping->page_tree, and indexed by offset. * Where 2.4 and early 2.6 kernels kept dirty/clean pages in per-address_space * lists, we instead now tag pages as dirty/writeback in the radix tree. |
1da177e4c Linux-2.6.12-rc2 |
538 |
* |
da6052f7b [PATCH] update so... |
539 |
* All pagecache pages may be subject to I/O: |
1da177e4c Linux-2.6.12-rc2 |
540 541 |
* - inode pages may need to be read from disk, * - inode pages which have been modified and are MAP_SHARED may need |
da6052f7b [PATCH] update so... |
542 543 544 545 |
* to be written back to the inode on disk, * - anonymous pages (including MAP_PRIVATE file mappings) which have been * modified may need to be swapped out to swap space and (later) to be read * back into memory. |
1da177e4c Linux-2.6.12-rc2 |
546 547 548 549 550 |
*/ /* * The zone field is never updated after free_area_init_core() * sets it, so none of the operations on it need to be atomic. |
1da177e4c Linux-2.6.12-rc2 |
551 |
*/ |
348f8b6c4 [PATCH] sparsemem... |
552 |
|
d41dee369 [PATCH] sparsemem... |
553 554 555 556 557 558 559 560 561 562 563 |
/* * page->flags layout: * * There are three possibilities for how page->flags get * laid out. The first is for the normal case, without * sparsemem. The second is for sparsemem when there is * plenty of space for node and section. The last is when * we have run out of space and have to fall back to an * alternate (slower) way of determining the node. * |
308c05e35 sparsemem: vmemma... |
564 565 566 |
* No sparsemem or sparsemem vmemmap: | NODE | ZONE | ... | FLAGS | * classic sparse with space for node:| SECTION | NODE | ZONE | ... | FLAGS | * classic sparse no space for node: | SECTION | ZONE | ... | FLAGS | |
d41dee369 [PATCH] sparsemem... |
567 |
*/ |
308c05e35 sparsemem: vmemma... |
568 |
#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) |
d41dee369 [PATCH] sparsemem... |
569 570 571 572 573 574 |
#define SECTIONS_WIDTH SECTIONS_SHIFT #else #define SECTIONS_WIDTH 0 #endif #define ZONES_WIDTH ZONES_SHIFT |
9223b4190 pageflags: get ri... |
575 |
#if SECTIONS_WIDTH+ZONES_WIDTH+NODES_SHIFT <= BITS_PER_LONG - NR_PAGEFLAGS |
d41dee369 [PATCH] sparsemem... |
576 577 |
#define NODES_WIDTH NODES_SHIFT #else |
308c05e35 sparsemem: vmemma... |
578 579 580 |
#ifdef CONFIG_SPARSEMEM_VMEMMAP #error "Vmemmap: No space for nodes field in page flags" #endif |
d41dee369 [PATCH] sparsemem... |
581 582 583 584 |
#define NODES_WIDTH 0 #endif /* Page flags: | [SECTION] | [NODE] | ZONE | ... | FLAGS | */ |
07808b74e [PATCH] x86_64: R... |
585 |
#define SECTIONS_PGOFF ((sizeof(unsigned long)*8) - SECTIONS_WIDTH) |
d41dee369 [PATCH] sparsemem... |
586 587 588 589 590 591 592 |
#define NODES_PGOFF (SECTIONS_PGOFF - NODES_WIDTH) #define ZONES_PGOFF (NODES_PGOFF - ZONES_WIDTH) /* * We are going to use the flags for the page to node mapping if its in * there. This includes the case where there is no node, so it is implicit. */ |
89689ae7f [PATCH] Get rid o... |
593 594 595 |
#if !(NODES_WIDTH > 0 || NODES_SHIFT == 0) #define NODE_NOT_IN_PAGE_FLAGS #endif |
d41dee369 [PATCH] sparsemem... |
596 |
|
348f8b6c4 [PATCH] sparsemem... |
597 |
/* |
25985edce Fix common misspe... |
598 |
* Define the bit shifts to access each section. For non-existent |
348f8b6c4 [PATCH] sparsemem... |
599 600 601 |
* sections we define the shift as 0; that plus a 0 mask ensures * the compiler will optimise away reference to them. */ |
d41dee369 [PATCH] sparsemem... |
602 603 604 |
#define SECTIONS_PGSHIFT (SECTIONS_PGOFF * (SECTIONS_WIDTH != 0)) #define NODES_PGSHIFT (NODES_PGOFF * (NODES_WIDTH != 0)) #define ZONES_PGSHIFT (ZONES_PGOFF * (ZONES_WIDTH != 0)) |
348f8b6c4 [PATCH] sparsemem... |
605 |
|
bce54bbfd mm: fix typo in m... |
606 607 |
/* NODE:ZONE or SECTION:ZONE is used to ID a zone for the buddy allocator */ #ifdef NODE_NOT_IN_PAGE_FLAGS |
89689ae7f [PATCH] Get rid o... |
608 |
#define ZONEID_SHIFT (SECTIONS_SHIFT + ZONES_SHIFT) |
bd8029b66 [PATCH] zoneid: f... |
609 610 |
#define ZONEID_PGOFF ((SECTIONS_PGOFF < ZONES_PGOFF)? \ SECTIONS_PGOFF : ZONES_PGOFF) |
d41dee369 [PATCH] sparsemem... |
611 |
#else |
89689ae7f [PATCH] Get rid o... |
612 |
#define ZONEID_SHIFT (NODES_SHIFT + ZONES_SHIFT) |
bd8029b66 [PATCH] zoneid: f... |
613 614 |
#define ZONEID_PGOFF ((NODES_PGOFF < ZONES_PGOFF)? \ NODES_PGOFF : ZONES_PGOFF) |
89689ae7f [PATCH] Get rid o... |
615 |
#endif |
bd8029b66 [PATCH] zoneid: f... |
616 |
#define ZONEID_PGSHIFT (ZONEID_PGOFF * (ZONEID_SHIFT != 0)) |
348f8b6c4 [PATCH] sparsemem... |
617 |
|
9223b4190 pageflags: get ri... |
618 619 |
#if SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS #error SECTIONS_WIDTH+NODES_WIDTH+ZONES_WIDTH > BITS_PER_LONG - NR_PAGEFLAGS |
348f8b6c4 [PATCH] sparsemem... |
620 |
#endif |
d41dee369 [PATCH] sparsemem... |
621 622 623 |
#define ZONES_MASK ((1UL << ZONES_WIDTH) - 1) #define NODES_MASK ((1UL << NODES_WIDTH) - 1) #define SECTIONS_MASK ((1UL << SECTIONS_WIDTH) - 1) |
89689ae7f [PATCH] Get rid o... |
624 |
#define ZONEID_MASK ((1UL << ZONEID_SHIFT) - 1) |
348f8b6c4 [PATCH] sparsemem... |
625 |
|
33dd4e0ec mm: make some str... |
626 |
static inline enum zone_type page_zonenum(const struct page *page) |
1da177e4c Linux-2.6.12-rc2 |
627 |
{ |
348f8b6c4 [PATCH] sparsemem... |
628 |
return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK; |
1da177e4c Linux-2.6.12-rc2 |
629 |
} |
1da177e4c Linux-2.6.12-rc2 |
630 |
|
89689ae7f [PATCH] Get rid o... |
631 632 633 634 635 636 637 638 |
/* * The identification function is only used by the buddy allocator for * determining if two pages could be buddies. We are not really * identifying a zone since we could be using a the section number * id if we have not node id available in page flags. * We guarantee only that it will return the same value for two * combinable pages in a zone. */ |
cb2b95e1c [PATCH] zone hand... |
639 640 |
static inline int page_zone_id(struct page *page) { |
89689ae7f [PATCH] Get rid o... |
641 |
return (page->flags >> ZONEID_PGSHIFT) & ZONEID_MASK; |
348f8b6c4 [PATCH] sparsemem... |
642 |
} |
25ba77c14 [PATCH] numa node... |
643 |
static inline int zone_to_nid(struct zone *zone) |
89fa30242 [PATCH] NUMA: Add... |
644 |
{ |
d5f541ed6 [PATCH] Add node ... |
645 646 647 648 649 |
#ifdef CONFIG_NUMA return zone->node; #else return 0; #endif |
89fa30242 [PATCH] NUMA: Add... |
650 |
} |
89689ae7f [PATCH] Get rid o... |
651 |
#ifdef NODE_NOT_IN_PAGE_FLAGS |
33dd4e0ec mm: make some str... |
652 |
extern int page_to_nid(const struct page *page); |
89689ae7f [PATCH] Get rid o... |
653 |
#else |
33dd4e0ec mm: make some str... |
654 |
static inline int page_to_nid(const struct page *page) |
d41dee369 [PATCH] sparsemem... |
655 |
{ |
89689ae7f [PATCH] Get rid o... |
656 |
return (page->flags >> NODES_PGSHIFT) & NODES_MASK; |
d41dee369 [PATCH] sparsemem... |
657 |
} |
89689ae7f [PATCH] Get rid o... |
658 |
#endif |
33dd4e0ec mm: make some str... |
659 |
static inline struct zone *page_zone(const struct page *page) |
89689ae7f [PATCH] Get rid o... |
660 661 662 |
{ return &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)]; } |
308c05e35 sparsemem: vmemma... |
663 |
#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) |
bf4e8902e mm: enable set_pa... |
664 665 666 667 668 |
static inline void set_page_section(struct page *page, unsigned long section) { page->flags &= ~(SECTIONS_MASK << SECTIONS_PGSHIFT); page->flags |= (section & SECTIONS_MASK) << SECTIONS_PGSHIFT; } |
aa462abe8 mm: fix __page_to... |
669 |
static inline unsigned long page_to_section(const struct page *page) |
d41dee369 [PATCH] sparsemem... |
670 671 672 |
{ return (page->flags >> SECTIONS_PGSHIFT) & SECTIONS_MASK; } |
308c05e35 sparsemem: vmemma... |
673 |
#endif |
d41dee369 [PATCH] sparsemem... |
674 |
|
2f1b62486 [PATCH] reduce MA... |
675 |
static inline void set_page_zone(struct page *page, enum zone_type zone) |
348f8b6c4 [PATCH] sparsemem... |
676 677 678 679 |
{ page->flags &= ~(ZONES_MASK << ZONES_PGSHIFT); page->flags |= (zone & ZONES_MASK) << ZONES_PGSHIFT; } |
2f1b62486 [PATCH] reduce MA... |
680 |
|
348f8b6c4 [PATCH] sparsemem... |
681 682 683 684 |
static inline void set_page_node(struct page *page, unsigned long node) { page->flags &= ~(NODES_MASK << NODES_PGSHIFT); page->flags |= (node & NODES_MASK) << NODES_PGSHIFT; |
1da177e4c Linux-2.6.12-rc2 |
685 |
} |
89689ae7f [PATCH] Get rid o... |
686 |
|
2f1b62486 [PATCH] reduce MA... |
687 |
static inline void set_page_links(struct page *page, enum zone_type zone, |
d41dee369 [PATCH] sparsemem... |
688 |
unsigned long node, unsigned long pfn) |
1da177e4c Linux-2.6.12-rc2 |
689 |
{ |
348f8b6c4 [PATCH] sparsemem... |
690 691 |
set_page_zone(page, zone); set_page_node(page, node); |
bf4e8902e mm: enable set_pa... |
692 |
#if defined(CONFIG_SPARSEMEM) && !defined(CONFIG_SPARSEMEM_VMEMMAP) |
d41dee369 [PATCH] sparsemem... |
693 |
set_page_section(page, pfn_to_section_nr(pfn)); |
bf4e8902e mm: enable set_pa... |
694 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
695 |
} |
f6ac2354d [PATCH] zoned vm ... |
696 697 698 699 |
/* * Some inline functions in vmstat.h depend on page_zone() */ #include <linux/vmstat.h> |
33dd4e0ec mm: make some str... |
700 |
static __always_inline void *lowmem_page_address(const struct page *page) |
1da177e4c Linux-2.6.12-rc2 |
701 |
{ |
aa462abe8 mm: fix __page_to... |
702 |
return __va(PFN_PHYS(page_to_pfn(page))); |
1da177e4c Linux-2.6.12-rc2 |
703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 |
} #if defined(CONFIG_HIGHMEM) && !defined(WANT_PAGE_VIRTUAL) #define HASHED_PAGE_VIRTUAL #endif #if defined(WANT_PAGE_VIRTUAL) #define page_address(page) ((page)->virtual) #define set_page_address(page, address) \ do { \ (page)->virtual = (address); \ } while(0) #define page_address_init() do { } while(0) #endif #if defined(HASHED_PAGE_VIRTUAL) |
f99187947 mm: make HASHED_P... |
719 |
void *page_address(const struct page *page); |
1da177e4c Linux-2.6.12-rc2 |
720 721 722 723 724 725 726 727 728 729 730 731 732 |
void set_page_address(struct page *page, void *virtual); void page_address_init(void); #endif #if !defined(HASHED_PAGE_VIRTUAL) && !defined(WANT_PAGE_VIRTUAL) #define page_address(page) lowmem_page_address(page) #define set_page_address(page, address) do { } while(0) #define page_address_init() do { } while(0) #endif /* * On an anonymous page mapped into a user virtual memory area, * page->mapping points to its anon_vma, not to a struct address_space; |
3ca7b3c5b mm: define PAGE_M... |
733 734 735 736 737 738 739 740 |
* with the PAGE_MAPPING_ANON bit set to distinguish it. See rmap.h. * * On an anonymous page in a VM_MERGEABLE area, if CONFIG_KSM is enabled, * the PAGE_MAPPING_KSM bit may be set along with the PAGE_MAPPING_ANON bit; * and then page->mapping points, not to an anon_vma, but to a private * structure which KSM associates with that merged page. See ksm.h. * * PAGE_MAPPING_KSM without PAGE_MAPPING_ANON is currently never used. |
1da177e4c Linux-2.6.12-rc2 |
741 742 743 744 745 746 |
* * Please note that, confusingly, "page_mapping" refers to the inode * address_space which maps the page from disk; whereas "page_mapped" * refers to user virtual address space into which the page is mapped. */ #define PAGE_MAPPING_ANON 1 |
3ca7b3c5b mm: define PAGE_M... |
747 748 |
#define PAGE_MAPPING_KSM 2 #define PAGE_MAPPING_FLAGS (PAGE_MAPPING_ANON | PAGE_MAPPING_KSM) |
1da177e4c Linux-2.6.12-rc2 |
749 750 751 752 753 |
extern struct address_space swapper_space; static inline struct address_space *page_mapping(struct page *page) { struct address_space *mapping = page->mapping; |
b5fab14e5 Add VM_BUG_ON in ... |
754 |
VM_BUG_ON(PageSlab(page)); |
1da177e4c Linux-2.6.12-rc2 |
755 756 |
if (unlikely(PageSwapCache(page))) mapping = &swapper_space; |
e20e87795 mm: remove unlike... |
757 |
else if ((unsigned long)mapping & PAGE_MAPPING_ANON) |
1da177e4c Linux-2.6.12-rc2 |
758 759 760 |
mapping = NULL; return mapping; } |
3ca7b3c5b mm: define PAGE_M... |
761 762 763 764 765 |
/* Neutral page->mapping pointer to address_space or anon_vma or other */ static inline void *page_rmapping(struct page *page) { return (void *)((unsigned long)page->mapping & ~PAGE_MAPPING_FLAGS); } |
1da177e4c Linux-2.6.12-rc2 |
766 767 768 769 770 771 772 773 774 775 776 777 |
static inline int PageAnon(struct page *page) { return ((unsigned long)page->mapping & PAGE_MAPPING_ANON) != 0; } /* * Return the pagecache index of the passed page. Regular pagecache pages * use ->index whereas swapcache pages use ->private */ static inline pgoff_t page_index(struct page *page) { if (unlikely(PageSwapCache(page))) |
4c21e2f24 [PATCH] mm: split... |
778 |
return page_private(page); |
1da177e4c Linux-2.6.12-rc2 |
779 780 781 782 |
return page->index; } /* |
1da177e4c Linux-2.6.12-rc2 |
783 784 785 786 787 788 789 790 |
* Return true if this page is mapped into pagetables. */ static inline int page_mapped(struct page *page) { return atomic_read(&(page)->_mapcount) >= 0; } /* |
1da177e4c Linux-2.6.12-rc2 |
791 792 793 794 |
* Different kinds of faults, as returned by handle_mm_fault(). * Used to decide whether a process gets delivered SIGBUS or * just gets major/minor fault counters bumped up. */ |
d0217ac04 mm: fault feedbac... |
795 |
|
83c54070e mm: fault feedbac... |
796 |
#define VM_FAULT_MINOR 0 /* For backwards compat. Remove me quickly. */ |
d0217ac04 mm: fault feedbac... |
797 |
|
83c54070e mm: fault feedbac... |
798 799 800 801 |
#define VM_FAULT_OOM 0x0001 #define VM_FAULT_SIGBUS 0x0002 #define VM_FAULT_MAJOR 0x0004 #define VM_FAULT_WRITE 0x0008 /* Special case for get_user_pages */ |
aa50d3a7a Encode huge page ... |
802 803 |
#define VM_FAULT_HWPOISON 0x0010 /* Hit poisoned small page */ #define VM_FAULT_HWPOISON_LARGE 0x0020 /* Hit poisoned large page. Index encoded in upper bits */ |
f33ea7f40 [PATCH] fix get_u... |
804 |
|
83c54070e mm: fault feedbac... |
805 806 |
#define VM_FAULT_NOPAGE 0x0100 /* ->fault installed the pte, not return page */ #define VM_FAULT_LOCKED 0x0200 /* ->fault locked the returned page */ |
d065bd810 mm: retry page fa... |
807 |
#define VM_FAULT_RETRY 0x0400 /* ->fault blocked, must retry */ |
1da177e4c Linux-2.6.12-rc2 |
808 |
|
aa50d3a7a Encode huge page ... |
809 810 811 812 813 814 815 816 |
#define VM_FAULT_HWPOISON_LARGE_MASK 0xf000 /* encodes hpage index for large hwpoison */ #define VM_FAULT_ERROR (VM_FAULT_OOM | VM_FAULT_SIGBUS | VM_FAULT_HWPOISON | \ VM_FAULT_HWPOISON_LARGE) /* Encode hstate index for a hwpoisoned large page */ #define VM_FAULT_SET_HINDEX(x) ((x) << 12) #define VM_FAULT_GET_HINDEX(x) (((x) >> 12) & 0xf) |
d0217ac04 mm: fault feedbac... |
817 |
|
1c0fe6e3b mm: invoke oom-ki... |
818 819 820 821 |
/* * Can be called by the pagefault handler when it gets a VM_FAULT_OOM. */ extern void pagefault_out_of_memory(void); |
1da177e4c Linux-2.6.12-rc2 |
822 |
#define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) |
ddd588b5d oom: suppress nod... |
823 |
/* |
7bf02ea22 arch, mm: filter ... |
824 |
* Flags passed to show_mem() and show_free_areas() to suppress output in |
ddd588b5d oom: suppress nod... |
825 826 827 |
* various contexts. */ #define SHOW_MEM_FILTER_NODES (0x0001u) /* filter disallowed nodes */ |
7bf02ea22 arch, mm: filter ... |
828 829 |
extern void show_free_areas(unsigned int flags); extern bool skip_free_areas_node(unsigned int flags, int nid); |
1da177e4c Linux-2.6.12-rc2 |
830 |
|
3f96b79ad tmpfs: depend on ... |
831 |
int shmem_lock(struct file *file, int lock, struct user_struct *user); |
168f5ac66 mm cleanup: shmem... |
832 |
struct file *shmem_file_setup(const char *name, loff_t size, unsigned long flags); |
1da177e4c Linux-2.6.12-rc2 |
833 |
int shmem_zero_setup(struct vm_area_struct *); |
e8edc6e03 Detach sched.h fr... |
834 |
extern int can_do_mlock(void); |
1da177e4c Linux-2.6.12-rc2 |
835 836 837 838 839 840 841 842 843 844 845 |
extern int user_shm_lock(size_t, struct user_struct *); extern void user_shm_unlock(size_t, struct user_struct *); /* * Parameter block passed down to zap_pte_range in exceptional cases. */ struct zap_details { struct vm_area_struct *nonlinear_vma; /* Check page->index if set */ struct address_space *check_mapping; /* Check page->mapping if set */ pgoff_t first_index; /* Lowest page->index to unmap */ pgoff_t last_index; /* Highest page->index to unmap */ |
1da177e4c Linux-2.6.12-rc2 |
846 |
}; |
7e675137a mm: introduce pte... |
847 848 |
struct page *vm_normal_page(struct vm_area_struct *vma, unsigned long addr, pte_t pte); |
c627f9cc0 mm: add zap_vma_p... |
849 850 |
int zap_vma_ptes(struct vm_area_struct *vma, unsigned long address, unsigned long size); |
ee39b37b2 [PATCH] freepgt: ... |
851 |
unsigned long zap_page_range(struct vm_area_struct *vma, unsigned long address, |
1da177e4c Linux-2.6.12-rc2 |
852 |
unsigned long size, struct zap_details *); |
d16dfc550 mm: mmu_gather re... |
853 |
unsigned long unmap_vmas(struct mmu_gather *tlb, |
1da177e4c Linux-2.6.12-rc2 |
854 855 856 |
struct vm_area_struct *start_vma, unsigned long start_addr, unsigned long end_addr, unsigned long *nr_accounted, struct zap_details *); |
e6473092b maps4: introduce ... |
857 858 859 860 861 862 |
/** * mm_walk - callbacks for walk_page_range * @pgd_entry: if set, called for each non-empty PGD (top-level) entry * @pud_entry: if set, called for each non-empty PUD (2nd-level) entry * @pmd_entry: if set, called for each non-empty PMD (3rd-level) entry |
033193275 pagewalk: only sp... |
863 864 865 |
* this handler is required to be able to handle * pmd_trans_huge() pmds. They may simply choose to * split_huge_page() instead of handling it explicitly. |
e6473092b maps4: introduce ... |
866 867 |
* @pte_entry: if set, called for each non-empty PTE (4th-level) entry * @pte_hole: if set, called for each hole at all levels |
5dc37642c mm hugetlb: add h... |
868 |
* @hugetlb_entry: if set, called for each hugetlb entry |
c27fe4c89 pagewalk: add loc... |
869 870 |
* *Caution*: The caller must hold mmap_sem() if @hugetlb_entry * is used. |
e6473092b maps4: introduce ... |
871 872 873 874 |
* * (see walk_page_range for more details) */ struct mm_walk { |
2165009bd pagemap: pass mm ... |
875 876 877 878 879 |
int (*pgd_entry)(pgd_t *, unsigned long, unsigned long, struct mm_walk *); int (*pud_entry)(pud_t *, unsigned long, unsigned long, struct mm_walk *); int (*pmd_entry)(pmd_t *, unsigned long, unsigned long, struct mm_walk *); int (*pte_entry)(pte_t *, unsigned long, unsigned long, struct mm_walk *); int (*pte_hole)(unsigned long, unsigned long, struct mm_walk *); |
116354d17 pagemap: fix pfn ... |
880 881 |
int (*hugetlb_entry)(pte_t *, unsigned long, unsigned long, unsigned long, struct mm_walk *); |
2165009bd pagemap: pass mm ... |
882 883 |
struct mm_struct *mm; void *private; |
e6473092b maps4: introduce ... |
884 |
}; |
2165009bd pagemap: pass mm ... |
885 886 |
int walk_page_range(unsigned long addr, unsigned long end, struct mm_walk *walk); |
42b777281 mm: remove double... |
887 |
void free_pgd_range(struct mmu_gather *tlb, unsigned long addr, |
3bf5ee956 [PATCH] freepgt: ... |
888 |
unsigned long end, unsigned long floor, unsigned long ceiling); |
1da177e4c Linux-2.6.12-rc2 |
889 890 |
int copy_page_range(struct mm_struct *dst, struct mm_struct *src, struct vm_area_struct *vma); |
1da177e4c Linux-2.6.12-rc2 |
891 892 |
void unmap_mapping_range(struct address_space *mapping, loff_t const holebegin, loff_t const holelen, int even_cows); |
3b6748e2d mm: introduce fol... |
893 894 |
int follow_pfn(struct vm_area_struct *vma, unsigned long address, unsigned long *pfn); |
d87fe6607 x86: PAT: modify ... |
895 896 |
int follow_phys(struct vm_area_struct *vma, unsigned long address, unsigned int flags, unsigned long *prot, resource_size_t *phys); |
28b2ee20c access_process_vm... |
897 898 |
int generic_access_phys(struct vm_area_struct *vma, unsigned long addr, void *buf, int len, int write); |
1da177e4c Linux-2.6.12-rc2 |
899 900 901 902 903 904 |
static inline void unmap_shared_mapping_range(struct address_space *mapping, loff_t const holebegin, loff_t const holelen) { unmap_mapping_range(mapping, holebegin, holelen, 0); } |
25d9e2d15 truncate: new hel... |
905 |
extern void truncate_pagecache(struct inode *inode, loff_t old, loff_t new); |
2c27c65ed check ATTR_SIZE c... |
906 |
extern void truncate_setsize(struct inode *inode, loff_t newsize); |
25d9e2d15 truncate: new hel... |
907 908 |
extern int vmtruncate(struct inode *inode, loff_t offset); extern int vmtruncate_range(struct inode *inode, loff_t offset, loff_t end); |
f33ea7f40 [PATCH] fix get_u... |
909 |
|
750b4987b HWPOISON: Refacto... |
910 |
int truncate_inode_page(struct address_space *mapping, struct page *page); |
257187362 HWPOISON: Define ... |
911 |
int generic_error_remove_page(struct address_space *mapping, struct page *page); |
750b4987b HWPOISON: Refacto... |
912 |
|
83f786680 HWPOISON: Add inv... |
913 |
int invalidate_inode_page(struct page *page); |
7ee1dd3fe [PATCH] FRV: Make... |
914 |
#ifdef CONFIG_MMU |
83c54070e mm: fault feedbac... |
915 |
extern int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, |
d06063cc2 Move FAULT_FLAG_x... |
916 |
unsigned long address, unsigned int flags); |
5c723ba5b mm: Fix fixup_use... |
917 918 |
extern int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm, unsigned long address, unsigned int fault_flags); |
7ee1dd3fe [PATCH] FRV: Make... |
919 920 921 |
#else static inline int handle_mm_fault(struct mm_struct *mm, struct vm_area_struct *vma, unsigned long address, |
d06063cc2 Move FAULT_FLAG_x... |
922 |
unsigned int flags) |
7ee1dd3fe [PATCH] FRV: Make... |
923 924 925 926 927 |
{ /* should never happen if there's no MMU */ BUG(); return VM_FAULT_SIGBUS; } |
5c723ba5b mm: Fix fixup_use... |
928 929 930 931 932 933 934 935 |
static inline int fixup_user_fault(struct task_struct *tsk, struct mm_struct *mm, unsigned long address, unsigned int fault_flags) { /* should never happen if there's no MMU */ BUG(); return -EFAULT; } |
7ee1dd3fe [PATCH] FRV: Make... |
936 |
#endif |
f33ea7f40 [PATCH] fix get_u... |
937 |
|
1da177e4c Linux-2.6.12-rc2 |
938 939 |
extern int make_pages_present(unsigned long addr, unsigned long end); extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write); |
5ddd36b9c mm: implement acc... |
940 941 |
extern int access_remote_vm(struct mm_struct *mm, unsigned long addr, void *buf, int len, int write); |
1da177e4c Linux-2.6.12-rc2 |
942 |
|
0014bd990 mm: export __get_... |
943 944 945 946 |
int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned long start, int len, unsigned int foll_flags, struct page **pages, struct vm_area_struct **vmas, int *nonblocking); |
d2bf6be8a mm: clean up get_... |
947 |
int get_user_pages(struct task_struct *tsk, struct mm_struct *mm, |
9d73777e5 clarify get_user_... |
948 |
unsigned long start, int nr_pages, int write, int force, |
d2bf6be8a mm: clean up get_... |
949 950 951 |
struct page **pages, struct vm_area_struct **vmas); int get_user_pages_fast(unsigned long start, int nr_pages, int write, struct page **pages); |
f3e8fccd0 mm: add get_dump_... |
952 |
struct page *get_dump_page(unsigned long addr); |
1da177e4c Linux-2.6.12-rc2 |
953 |
|
cf9a2ae8d [PATCH] BLOCK: Mo... |
954 955 |
extern int try_to_release_page(struct page * page, gfp_t gfp_mask); extern void do_invalidatepage(struct page *page, unsigned long offset); |
1da177e4c Linux-2.6.12-rc2 |
956 |
int __set_page_dirty_nobuffers(struct page *page); |
767193253 [PATCH] simplify ... |
957 |
int __set_page_dirty_no_writeback(struct page *page); |
1da177e4c Linux-2.6.12-rc2 |
958 959 |
int redirty_page_for_writepage(struct writeback_control *wbc, struct page *page); |
e3a7cca1e vfs: add/use acco... |
960 |
void account_page_dirtied(struct page *page, struct address_space *mapping); |
f629d1c9b mm: add account_p... |
961 |
void account_page_writeback(struct page *page); |
b3c975286 include/linux: Re... |
962 |
int set_page_dirty(struct page *page); |
1da177e4c Linux-2.6.12-rc2 |
963 964 |
int set_page_dirty_lock(struct page *page); int clear_page_dirty_for_io(struct page *page); |
39aa3cb3e mm: Move vma_stac... |
965 |
/* Is the vma a continuation of the stack vma above it? */ |
a09a79f66 Don't lock guardp... |
966 |
static inline int vma_growsdown(struct vm_area_struct *vma, unsigned long addr) |
39aa3cb3e mm: Move vma_stac... |
967 968 969 |
{ return vma && (vma->vm_end == addr) && (vma->vm_flags & VM_GROWSDOWN); } |
a09a79f66 Don't lock guardp... |
970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 |
static inline int stack_guard_page_start(struct vm_area_struct *vma, unsigned long addr) { return (vma->vm_flags & VM_GROWSDOWN) && (vma->vm_start == addr) && !vma_growsdown(vma->vm_prev, addr); } /* Is the vma a continuation of the stack vma below it? */ static inline int vma_growsup(struct vm_area_struct *vma, unsigned long addr) { return vma && (vma->vm_start == addr) && (vma->vm_flags & VM_GROWSUP); } static inline int stack_guard_page_end(struct vm_area_struct *vma, unsigned long addr) { return (vma->vm_flags & VM_GROWSUP) && (vma->vm_end == addr) && !vma_growsup(vma->vm_next, addr); } |
b6a2fea39 mm: variable leng... |
991 992 993 |
extern unsigned long move_page_tables(struct vm_area_struct *vma, unsigned long old_addr, struct vm_area_struct *new_vma, unsigned long new_addr, unsigned long len); |
1da177e4c Linux-2.6.12-rc2 |
994 995 996 |
extern unsigned long do_mremap(unsigned long addr, unsigned long old_len, unsigned long new_len, unsigned long flags, unsigned long new_addr); |
b6a2fea39 mm: variable leng... |
997 998 999 |
extern int mprotect_fixup(struct vm_area_struct *vma, struct vm_area_struct **pprev, unsigned long start, unsigned long end, unsigned long newflags); |
1da177e4c Linux-2.6.12-rc2 |
1000 |
|
21cc199ba mm: introduce get... |
1001 |
/* |
465a454f2 x86, mm: Add __ge... |
1002 1003 1004 1005 |
* doesn't attempt to fault and will return short. */ int __get_user_pages_fast(unsigned long start, int nr_pages, int write, struct page **pages); |
d559db086 mm: clean up mm_c... |
1006 1007 1008 |
/* * per-process(per-mm_struct) statistics. */ |
d559db086 mm: clean up mm_c... |
1009 1010 1011 1012 |
static inline void set_mm_counter(struct mm_struct *mm, int member, long value) { atomic_long_set(&mm->rss_stat.count[member], value); } |
172703b08 mm: delete non-at... |
1013 |
#if defined(SPLIT_RSS_COUNTING) |
34e55232e mm: avoid false s... |
1014 |
unsigned long get_mm_counter(struct mm_struct *mm, int member); |
172703b08 mm: delete non-at... |
1015 |
#else |
d559db086 mm: clean up mm_c... |
1016 1017 |
static inline unsigned long get_mm_counter(struct mm_struct *mm, int member) { |
172703b08 mm: delete non-at... |
1018 |
return atomic_long_read(&mm->rss_stat.count[member]); |
d559db086 mm: clean up mm_c... |
1019 |
} |
172703b08 mm: delete non-at... |
1020 |
#endif |
d559db086 mm: clean up mm_c... |
1021 1022 1023 |
static inline void add_mm_counter(struct mm_struct *mm, int member, long value) { |
172703b08 mm: delete non-at... |
1024 |
atomic_long_add(value, &mm->rss_stat.count[member]); |
d559db086 mm: clean up mm_c... |
1025 1026 1027 1028 |
} static inline void inc_mm_counter(struct mm_struct *mm, int member) { |
172703b08 mm: delete non-at... |
1029 |
atomic_long_inc(&mm->rss_stat.count[member]); |
d559db086 mm: clean up mm_c... |
1030 1031 1032 1033 |
} static inline void dec_mm_counter(struct mm_struct *mm, int member) { |
172703b08 mm: delete non-at... |
1034 |
atomic_long_dec(&mm->rss_stat.count[member]); |
d559db086 mm: clean up mm_c... |
1035 |
} |
d559db086 mm: clean up mm_c... |
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 |
static inline unsigned long get_mm_rss(struct mm_struct *mm) { return get_mm_counter(mm, MM_FILEPAGES) + get_mm_counter(mm, MM_ANONPAGES); } static inline unsigned long get_mm_hiwater_rss(struct mm_struct *mm) { return max(mm->hiwater_rss, get_mm_rss(mm)); } static inline unsigned long get_mm_hiwater_vm(struct mm_struct *mm) { return max(mm->hiwater_vm, mm->total_vm); } static inline void update_hiwater_rss(struct mm_struct *mm) { unsigned long _rss = get_mm_rss(mm); if ((mm)->hiwater_rss < _rss) (mm)->hiwater_rss = _rss; } static inline void update_hiwater_vm(struct mm_struct *mm) { if (mm->hiwater_vm < mm->total_vm) mm->hiwater_vm = mm->total_vm; } static inline void setmax_mm_hiwater_rss(unsigned long *maxrss, struct mm_struct *mm) { unsigned long hiwater_rss = get_mm_hiwater_rss(mm); if (*maxrss < hiwater_rss) *maxrss = hiwater_rss; } |
53bddb4e9 nommu: fix build ... |
1074 |
#if defined(SPLIT_RSS_COUNTING) |
34e55232e mm: avoid false s... |
1075 |
void sync_mm_rss(struct task_struct *task, struct mm_struct *mm); |
53bddb4e9 nommu: fix build ... |
1076 1077 1078 1079 1080 |
#else static inline void sync_mm_rss(struct task_struct *task, struct mm_struct *mm) { } #endif |
465a454f2 x86, mm: Add __ge... |
1081 |
|
4e950f6f0 Remove fs.h from ... |
1082 |
int vma_wants_writenotify(struct vm_area_struct *vma); |
d08b3851d [PATCH] mm: track... |
1083 |
|
25ca1d6c0 mm: wrap get_lock... |
1084 1085 1086 1087 1088 1089 1090 1091 1092 |
extern pte_t *__get_locked_pte(struct mm_struct *mm, unsigned long addr, spinlock_t **ptl); static inline pte_t *get_locked_pte(struct mm_struct *mm, unsigned long addr, spinlock_t **ptl) { pte_t *ptep; __cond_lock(*ptl, ptep = __get_locked_pte(mm, addr, ptl)); return ptep; } |
c9cfcddfd VM: add common he... |
1093 |
|
5f22df00a mm: remove gcc wo... |
1094 1095 1096 1097 1098 1099 1100 |
#ifdef __PAGETABLE_PUD_FOLDED static inline int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { return 0; } #else |
1bb3630e8 [PATCH] mm: ptd_a... |
1101 |
int __pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address); |
5f22df00a mm: remove gcc wo... |
1102 1103 1104 1105 1106 1107 1108 1109 1110 |
#endif #ifdef __PAGETABLE_PMD_FOLDED static inline int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { return 0; } #else |
1bb3630e8 [PATCH] mm: ptd_a... |
1111 |
int __pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address); |
5f22df00a mm: remove gcc wo... |
1112 |
#endif |
8ac1f8320 thp: pte alloc tr... |
1113 1114 |
int __pte_alloc(struct mm_struct *mm, struct vm_area_struct *vma, pmd_t *pmd, unsigned long address); |
1bb3630e8 [PATCH] mm: ptd_a... |
1115 |
int __pte_alloc_kernel(pmd_t *pmd, unsigned long address); |
1da177e4c Linux-2.6.12-rc2 |
1116 1117 1118 1119 |
/* * The following ifdef needed to get the 4level-fixup.h header to work. * Remove it when 4level-fixup.h has been removed. */ |
1bb3630e8 [PATCH] mm: ptd_a... |
1120 |
#if defined(CONFIG_MMU) && !defined(__ARCH_HAS_4LEVEL_HACK) |
1da177e4c Linux-2.6.12-rc2 |
1121 1122 |
static inline pud_t *pud_alloc(struct mm_struct *mm, pgd_t *pgd, unsigned long address) { |
1bb3630e8 [PATCH] mm: ptd_a... |
1123 1124 |
return (unlikely(pgd_none(*pgd)) && __pud_alloc(mm, pgd, address))? NULL: pud_offset(pgd, address); |
1da177e4c Linux-2.6.12-rc2 |
1125 1126 1127 1128 |
} static inline pmd_t *pmd_alloc(struct mm_struct *mm, pud_t *pud, unsigned long address) { |
1bb3630e8 [PATCH] mm: ptd_a... |
1129 1130 |
return (unlikely(pud_none(*pud)) && __pmd_alloc(mm, pud, address))? NULL: pmd_offset(pud, address); |
1da177e4c Linux-2.6.12-rc2 |
1131 |
} |
1bb3630e8 [PATCH] mm: ptd_a... |
1132 |
#endif /* CONFIG_MMU && !__ARCH_HAS_4LEVEL_HACK */ |
f7d0b926a mm: define USE_SP... |
1133 |
#if USE_SPLIT_PTLOCKS |
4c21e2f24 [PATCH] mm: split... |
1134 1135 1136 1137 1138 1139 |
/* * We tuck a spinlock to guard each pagetable page into its struct page, * at page->private, with BUILD_BUG_ON to make sure that this will not * overflow into the next struct page (as it might with DEBUG_SPINLOCK). * When freeing, reset page->mapping so free_pages_check won't complain. */ |
349aef0bc [PATCH] shrink st... |
1140 |
#define __pte_lockptr(page) &((page)->ptl) |
4c21e2f24 [PATCH] mm: split... |
1141 1142 1143 1144 1145 |
#define pte_lock_init(_page) do { \ spin_lock_init(__pte_lockptr(_page)); \ } while (0) #define pte_lock_deinit(page) ((page)->mapping = NULL) #define pte_lockptr(mm, pmd) ({(void)(mm); __pte_lockptr(pmd_page(*(pmd)));}) |
f7d0b926a mm: define USE_SP... |
1146 |
#else /* !USE_SPLIT_PTLOCKS */ |
4c21e2f24 [PATCH] mm: split... |
1147 1148 1149 1150 1151 1152 |
/* * We use mm->page_table_lock to guard all pagetable pages of the mm. */ #define pte_lock_init(page) do {} while (0) #define pte_lock_deinit(page) do {} while (0) #define pte_lockptr(mm, pmd) ({(void)(pmd); &(mm)->page_table_lock;}) |
f7d0b926a mm: define USE_SP... |
1153 |
#endif /* USE_SPLIT_PTLOCKS */ |
4c21e2f24 [PATCH] mm: split... |
1154 |
|
2f569afd9 CONFIG_HIGHPTE vs... |
1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 |
static inline void pgtable_page_ctor(struct page *page) { pte_lock_init(page); inc_zone_page_state(page, NR_PAGETABLE); } static inline void pgtable_page_dtor(struct page *page) { pte_lock_deinit(page); dec_zone_page_state(page, NR_PAGETABLE); } |
c74df32c7 [PATCH] mm: ptd_a... |
1166 1167 |
#define pte_offset_map_lock(mm, pmd, address, ptlp) \ ({ \ |
4c21e2f24 [PATCH] mm: split... |
1168 |
spinlock_t *__ptl = pte_lockptr(mm, pmd); \ |
c74df32c7 [PATCH] mm: ptd_a... |
1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 |
pte_t *__pte = pte_offset_map(pmd, address); \ *(ptlp) = __ptl; \ spin_lock(__ptl); \ __pte; \ }) #define pte_unmap_unlock(pte, ptl) do { \ spin_unlock(ptl); \ pte_unmap(pte); \ } while (0) |
8ac1f8320 thp: pte alloc tr... |
1179 1180 1181 1182 |
#define pte_alloc_map(mm, vma, pmd, address) \ ((unlikely(pmd_none(*(pmd))) && __pte_alloc(mm, vma, \ pmd, address))? \ NULL: pte_offset_map(pmd, address)) |
1bb3630e8 [PATCH] mm: ptd_a... |
1183 |
|
c74df32c7 [PATCH] mm: ptd_a... |
1184 |
#define pte_alloc_map_lock(mm, pmd, address, ptlp) \ |
8ac1f8320 thp: pte alloc tr... |
1185 1186 |
((unlikely(pmd_none(*(pmd))) && __pte_alloc(mm, NULL, \ pmd, address))? \ |
c74df32c7 [PATCH] mm: ptd_a... |
1187 |
NULL: pte_offset_map_lock(mm, pmd, address, ptlp)) |
1bb3630e8 [PATCH] mm: ptd_a... |
1188 |
#define pte_alloc_kernel(pmd, address) \ |
8ac1f8320 thp: pte alloc tr... |
1189 |
((unlikely(pmd_none(*(pmd))) && __pte_alloc_kernel(pmd, address))? \ |
1bb3630e8 [PATCH] mm: ptd_a... |
1190 |
NULL: pte_offset_kernel(pmd, address)) |
1da177e4c Linux-2.6.12-rc2 |
1191 1192 |
extern void free_area_init(unsigned long * zones_size); |
9109fb7b3 mm: drop unneeded... |
1193 1194 |
extern void free_area_init_node(int nid, unsigned long * zones_size, unsigned long zone_start_pfn, unsigned long *zholes_size); |
0ee332c14 memblock: Kill ea... |
1195 |
#ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP |
c713216de [PATCH] Introduce... |
1196 |
/* |
0ee332c14 memblock: Kill ea... |
1197 |
* With CONFIG_HAVE_MEMBLOCK_NODE_MAP set, an architecture may initialise its |
c713216de [PATCH] Introduce... |
1198 1199 1200 1201 1202 1203 |
* zones, allocate the backing mem_map and account for memory holes in a more * architecture independent manner. This is a substitute for creating the * zone_sizes[] and zholes_size[] arrays and passing them to * free_area_init_node() * * An architecture is expected to register range of page frames backed by |
0ee332c14 memblock: Kill ea... |
1204 |
* physical memory with memblock_add[_node]() before calling |
c713216de [PATCH] Introduce... |
1205 1206 1207 1208 1209 1210 |
* free_area_init_nodes() passing in the PFN each zone ends at. At a basic * usage, an architecture is expected to do something like * * unsigned long max_zone_pfns[MAX_NR_ZONES] = {max_dma, max_normal_pfn, * max_highmem_pfn}; * for_each_valid_physical_page_range() |
0ee332c14 memblock: Kill ea... |
1211 |
* memblock_add_node(base, size, nid) |
c713216de [PATCH] Introduce... |
1212 1213 |
* free_area_init_nodes(max_zone_pfns); * |
0ee332c14 memblock: Kill ea... |
1214 1215 1216 1217 |
* free_bootmem_with_active_regions() calls free_bootmem_node() for each * registered physical page range. Similarly * sparse_memory_present_with_active_regions() calls memory_present() for * each range when SPARSEMEM is enabled. |
c713216de [PATCH] Introduce... |
1218 1219 |
* * See mm/page_alloc.c for more information on each function exposed by |
0ee332c14 memblock: Kill ea... |
1220 |
* CONFIG_HAVE_MEMBLOCK_NODE_MAP. |
c713216de [PATCH] Introduce... |
1221 1222 |
*/ extern void free_area_init_nodes(unsigned long *max_zone_pfn); |
1e01979c8 x86, numa: Implem... |
1223 |
unsigned long node_map_pfn_alignment(void); |
329962503 x86: Fix checking... |
1224 1225 |
unsigned long __absent_pages_in_range(int nid, unsigned long start_pfn, unsigned long end_pfn); |
c713216de [PATCH] Introduce... |
1226 1227 1228 1229 1230 |
extern unsigned long absent_pages_in_range(unsigned long start_pfn, unsigned long end_pfn); extern void get_pfn_range_for_nid(unsigned int nid, unsigned long *start_pfn, unsigned long *end_pfn); extern unsigned long find_min_pfn_with_active_regions(void); |
c713216de [PATCH] Introduce... |
1231 1232 |
extern void free_bootmem_with_active_regions(int nid, unsigned long max_low_pfn); |
08677214e x86: Make 64 bit ... |
1233 1234 |
int add_from_early_node_map(struct range *range, int az, int nr_range, int nid); |
c713216de [PATCH] Introduce... |
1235 |
extern void sparse_memory_present_with_active_regions(int nid); |
f2dbcfa73 mm: clean up for ... |
1236 |
|
0ee332c14 memblock: Kill ea... |
1237 |
#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP */ |
f2dbcfa73 mm: clean up for ... |
1238 |
|
0ee332c14 memblock: Kill ea... |
1239 |
#if !defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) && \ |
f2dbcfa73 mm: clean up for ... |
1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 |
!defined(CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID) static inline int __early_pfn_to_nid(unsigned long pfn) { return 0; } #else /* please see mm/page_alloc.c */ extern int __meminit early_pfn_to_nid(unsigned long pfn); #ifdef CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID /* there is a per-arch backend function. */ extern int __meminit __early_pfn_to_nid(unsigned long pfn); #endif /* CONFIG_HAVE_ARCH_EARLY_PFN_TO_NID */ #endif |
0e0b864e0 [PATCH] Account f... |
1253 |
extern void set_dma_reserve(unsigned long new_dma_reserve); |
a2f3aa025 [PATCH] Fix spars... |
1254 1255 |
extern void memmap_init_zone(unsigned long, int, unsigned long, unsigned long, enum memmap_context); |
bc75d33f0 page-allocator: c... |
1256 |
extern void setup_per_zone_wmarks(void); |
1b79acc91 mm, mem-hotplug: ... |
1257 |
extern int __meminit init_per_zone_wmark_min(void); |
1da177e4c Linux-2.6.12-rc2 |
1258 |
extern void mem_init(void); |
8feae1311 NOMMU: Make VMAs ... |
1259 |
extern void __init mmap_init(void); |
b2b755b5f lib, arch: add fi... |
1260 |
extern void show_mem(unsigned int flags); |
1da177e4c Linux-2.6.12-rc2 |
1261 1262 |
extern void si_meminfo(struct sysinfo * val); extern void si_meminfo_node(struct sysinfo *val, int nid); |
3461b0af0 x86: remove stati... |
1263 |
extern int after_bootmem; |
1da177e4c Linux-2.6.12-rc2 |
1264 |
|
3ee9a4f08 mm: neaten warn_a... |
1265 1266 |
extern __printf(3, 4) void warn_alloc_failed(gfp_t gfp_mask, int order, const char *fmt, ...); |
a238ab5b0 mm: break out pag... |
1267 |
|
e7c8d5c99 [PATCH] node loca... |
1268 |
extern void setup_per_cpu_pageset(void); |
e7c8d5c99 [PATCH] node loca... |
1269 |
|
112067f09 memory hotplug: u... |
1270 |
extern void zone_pcp_update(struct zone *zone); |
8feae1311 NOMMU: Make VMAs ... |
1271 |
/* nommu.c */ |
33e5d7697 nommu: fix a numb... |
1272 |
extern atomic_long_t mmap_pages_allocated; |
7e6608724 nommu: fix shared... |
1273 |
extern int nommu_shrink_inode_mappings(struct inode *, size_t, size_t); |
8feae1311 NOMMU: Make VMAs ... |
1274 |
|
1da177e4c Linux-2.6.12-rc2 |
1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 |
/* prio_tree.c */ void vma_prio_tree_add(struct vm_area_struct *, struct vm_area_struct *old); void vma_prio_tree_insert(struct vm_area_struct *, struct prio_tree_root *); void vma_prio_tree_remove(struct vm_area_struct *, struct prio_tree_root *); struct vm_area_struct *vma_prio_tree_next(struct vm_area_struct *vma, struct prio_tree_iter *iter); #define vma_prio_tree_foreach(vma, iter, root, begin, end) \ for (prio_tree_iter_init(iter, root, begin, end), vma = NULL; \ (vma = vma_prio_tree_next(vma, iter)); ) static inline void vma_nonlinear_insert(struct vm_area_struct *vma, struct list_head *list) { vma->shared.vm_set.parent = NULL; list_add_tail(&vma->shared.vm_set.list, list); } /* mmap.c */ |
34b4e4aa3 fix NULL pointer ... |
1294 |
extern int __vm_enough_memory(struct mm_struct *mm, long pages, int cap_sys_admin); |
5beb49305 mm: change anon_v... |
1295 |
extern int vma_adjust(struct vm_area_struct *vma, unsigned long start, |
1da177e4c Linux-2.6.12-rc2 |
1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 |
unsigned long end, pgoff_t pgoff, struct vm_area_struct *insert); extern struct vm_area_struct *vma_merge(struct mm_struct *, struct vm_area_struct *prev, unsigned long addr, unsigned long end, unsigned long vm_flags, struct anon_vma *, struct file *, pgoff_t, struct mempolicy *); extern struct anon_vma *find_mergeable_anon_vma(struct vm_area_struct *); extern int split_vma(struct mm_struct *, struct vm_area_struct *, unsigned long addr, int new_below); extern int insert_vm_struct(struct mm_struct *, struct vm_area_struct *); extern void __vma_link_rb(struct mm_struct *, struct vm_area_struct *, struct rb_node **, struct rb_node *); |
a8fb5618d [PATCH] mm: unlin... |
1307 |
extern void unlink_file_vma(struct vm_area_struct *); |
1da177e4c Linux-2.6.12-rc2 |
1308 1309 1310 |
extern struct vm_area_struct *copy_vma(struct vm_area_struct **, unsigned long addr, unsigned long len, pgoff_t pgoff); extern void exit_mmap(struct mm_struct *); |
925d1c401 procfs task exe s... |
1311 |
|
7906d00cd mmu-notifiers: ad... |
1312 1313 |
extern int mm_take_all_locks(struct mm_struct *mm); extern void mm_drop_all_locks(struct mm_struct *mm); |
925d1c401 procfs task exe s... |
1314 1315 1316 |
/* From fs/proc/base.c. callers must _not_ hold the mm's exe_file_lock */ extern void added_exe_file_vma(struct mm_struct *mm); extern void removed_exe_file_vma(struct mm_struct *mm); |
386460138 mm: extract exe_f... |
1317 1318 |
extern void set_mm_exe_file(struct mm_struct *mm, struct file *new_exe_file); extern struct file *get_mm_exe_file(struct mm_struct *mm); |
925d1c401 procfs task exe s... |
1319 |
|
119f657c7 [PATCH] RLIMIT_AS... |
1320 |
extern int may_expand_vm(struct mm_struct *mm, unsigned long npages); |
fa5dc22f8 [PATCH] Add insta... |
1321 1322 1323 |
extern int install_special_mapping(struct mm_struct *mm, unsigned long addr, unsigned long len, unsigned long flags, struct page **pages); |
1da177e4c Linux-2.6.12-rc2 |
1324 1325 1326 1327 1328 1329 |
extern unsigned long get_unmapped_area(struct file *, unsigned long, unsigned long, unsigned long, unsigned long); extern unsigned long do_mmap_pgoff(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, unsigned long flag, unsigned long pgoff); |
0165ab443 split mmap |
1330 1331 |
extern unsigned long mmap_region(struct file *file, unsigned long addr, unsigned long len, unsigned long flags, |
ca16d140a mm: don't access ... |
1332 |
vm_flags_t vm_flags, unsigned long pgoff); |
1da177e4c Linux-2.6.12-rc2 |
1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 |
static inline unsigned long do_mmap(struct file *file, unsigned long addr, unsigned long len, unsigned long prot, unsigned long flag, unsigned long offset) { unsigned long ret = -EINVAL; if ((offset + PAGE_ALIGN(len)) < offset) goto out; if (!(offset & ~PAGE_MASK)) ret = do_mmap_pgoff(file, addr, len, prot, flag, offset >> PAGE_SHIFT); out: return ret; } extern int do_munmap(struct mm_struct *, unsigned long, size_t); extern unsigned long do_brk(unsigned long, unsigned long); |
85821aab3 mm: truncate func... |
1350 |
/* truncate.c */ |
1da177e4c Linux-2.6.12-rc2 |
1351 |
extern void truncate_inode_pages(struct address_space *, loff_t); |
d7339071f [PATCH] reiser4: ... |
1352 1353 |
extern void truncate_inode_pages_range(struct address_space *, loff_t lstart, loff_t lend); |
1da177e4c Linux-2.6.12-rc2 |
1354 1355 |
/* generic vm_area_ops exported for stackable file systems */ |
d0217ac04 mm: fault feedbac... |
1356 |
extern int filemap_fault(struct vm_area_struct *, struct vm_fault *); |
1da177e4c Linux-2.6.12-rc2 |
1357 1358 1359 |
/* mm/page-writeback.c */ int write_one_page(struct page *page, int wait); |
1cf6e7d83 mm: task dirty ac... |
1360 |
void task_dirty_inc(struct task_struct *tsk); |
1da177e4c Linux-2.6.12-rc2 |
1361 1362 1363 1364 |
/* readahead.c */ #define VM_MAX_READAHEAD 128 /* kbytes */ #define VM_MIN_READAHEAD 16 /* kbytes (includes current page) */ |
1da177e4c Linux-2.6.12-rc2 |
1365 |
|
1da177e4c Linux-2.6.12-rc2 |
1366 |
int force_page_cache_readahead(struct address_space *mapping, struct file *filp, |
7361f4d8c [PATCH] readahead... |
1367 |
pgoff_t offset, unsigned long nr_to_read); |
cf914a7d6 readahead: split ... |
1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 |
void page_cache_sync_readahead(struct address_space *mapping, struct file_ra_state *ra, struct file *filp, pgoff_t offset, unsigned long size); void page_cache_async_readahead(struct address_space *mapping, struct file_ra_state *ra, struct file *filp, struct page *pg, pgoff_t offset, unsigned long size); |
1da177e4c Linux-2.6.12-rc2 |
1381 |
unsigned long max_sane_readahead(unsigned long nr); |
d30a11004 readahead: record... |
1382 1383 1384 |
unsigned long ra_submit(struct file_ra_state *ra, struct address_space *mapping, struct file *filp); |
1da177e4c Linux-2.6.12-rc2 |
1385 |
|
d05f3169c mm: make expand_d... |
1386 |
/* Generic expand stack which grows the stack according to GROWS{UP,DOWN} */ |
46dea3d09 [PATCH] mm: ia64 ... |
1387 |
extern int expand_stack(struct vm_area_struct *vma, unsigned long address); |
d05f3169c mm: make expand_d... |
1388 1389 1390 1391 |
/* CONFIG_STACK_GROWSUP still needs to to grow downwards at some places */ extern int expand_downwards(struct vm_area_struct *vma, unsigned long address); |
8ca3eb080 guard page for st... |
1392 |
#if VM_GROWSUP |
46dea3d09 [PATCH] mm: ia64 ... |
1393 |
extern int expand_upwards(struct vm_area_struct *vma, unsigned long address); |
8ca3eb080 guard page for st... |
1394 1395 |
#else #define expand_upwards(vma, address) do { } while (0) |
9ab885154 [PARISC] Fix comp... |
1396 |
#endif |
1da177e4c Linux-2.6.12-rc2 |
1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 |
/* Look up the first VMA which satisfies addr < vm_end, NULL if none. */ extern struct vm_area_struct * find_vma(struct mm_struct * mm, unsigned long addr); extern struct vm_area_struct * find_vma_prev(struct mm_struct * mm, unsigned long addr, struct vm_area_struct **pprev); /* Look up the first VMA which intersects the interval start_addr..end_addr-1, NULL if none. Assume start_addr < end_addr. */ static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * mm, unsigned long start_addr, unsigned long end_addr) { struct vm_area_struct * vma = find_vma(mm,start_addr); if (vma && end_addr <= vma->vm_start) vma = NULL; return vma; } static inline unsigned long vma_pages(struct vm_area_struct *vma) { return (vma->vm_end - vma->vm_start) >> PAGE_SHIFT; } |
640708a2c procfs: introduce... |
1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 |
/* Look up the first VMA which exactly match the interval vm_start ... vm_end */ static inline struct vm_area_struct *find_exact_vma(struct mm_struct *mm, unsigned long vm_start, unsigned long vm_end) { struct vm_area_struct *vma = find_vma(mm, vm_start); if (vma && (vma->vm_start != vm_start || vma->vm_end != vm_end)) vma = NULL; return vma; } |
bad849b3d NOMMU: Stub out v... |
1429 |
#ifdef CONFIG_MMU |
804af2cf6 [AGPGART] remove ... |
1430 |
pgprot_t vm_get_page_prot(unsigned long vm_flags); |
bad849b3d NOMMU: Stub out v... |
1431 1432 1433 1434 1435 1436 |
#else static inline pgprot_t vm_get_page_prot(unsigned long vm_flags) { return __pgprot(0); } #endif |
deceb6cd1 [PATCH] mm: follo... |
1437 |
struct vm_area_struct *find_extend_vma(struct mm_struct *, unsigned long addr); |
deceb6cd1 [PATCH] mm: follo... |
1438 1439 |
int remap_pfn_range(struct vm_area_struct *, unsigned long addr, unsigned long pfn, unsigned long size, pgprot_t); |
a145dd411 VM: add "vm_inser... |
1440 |
int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *); |
e0dc0d8f4 [PATCH] add vm_in... |
1441 1442 |
int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn); |
423bad600 mm: add vm_insert... |
1443 1444 |
int vm_insert_mixed(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn); |
deceb6cd1 [PATCH] mm: follo... |
1445 |
|
6aab341e0 mm: re-architect ... |
1446 |
struct page *follow_page(struct vm_area_struct *, unsigned long address, |
deceb6cd1 [PATCH] mm: follo... |
1447 1448 1449 1450 |
unsigned int foll_flags); #define FOLL_WRITE 0x01 /* check pte is writable */ #define FOLL_TOUCH 0x02 /* mark page accessed */ #define FOLL_GET 0x04 /* do get_page on page */ |
8e4b9a607 mm: FOLL_DUMP rep... |
1451 |
#define FOLL_DUMP 0x08 /* give error on hole if it would be zero */ |
58fa879e1 mm: FOLL flags fo... |
1452 |
#define FOLL_FORCE 0x10 /* get_user_pages read/write w/o permission */ |
318b275fb mm: allow GUP to ... |
1453 1454 |
#define FOLL_NOWAIT 0x20 /* if a disk transfer is needed, start the IO * and return without waiting upon it */ |
110d74a92 mm: add FOLL_MLOC... |
1455 |
#define FOLL_MLOCK 0x40 /* mark page as mlocked */ |
500d65d47 thp: pmd_trans_hu... |
1456 |
#define FOLL_SPLIT 0x80 /* don't return transhuge pages, split them */ |
69ebb83e1 mm: make __get_us... |
1457 |
#define FOLL_HWPOISON 0x100 /* check page is hwpoisoned */ |
1da177e4c Linux-2.6.12-rc2 |
1458 |
|
2f569afd9 CONFIG_HIGHPTE vs... |
1459 |
typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, |
aee16b3ce Add apply_to_page... |
1460 1461 1462 |
void *data); extern int apply_to_page_range(struct mm_struct *mm, unsigned long address, unsigned long size, pte_fn_t fn, void *data); |
1da177e4c Linux-2.6.12-rc2 |
1463 |
#ifdef CONFIG_PROC_FS |
ab50b8ed8 [PATCH] mm: vm_st... |
1464 |
void vm_stat_account(struct mm_struct *, unsigned long, struct file *, long); |
1da177e4c Linux-2.6.12-rc2 |
1465 |
#else |
ab50b8ed8 [PATCH] mm: vm_st... |
1466 |
static inline void vm_stat_account(struct mm_struct *mm, |
1da177e4c Linux-2.6.12-rc2 |
1467 1468 1469 1470 |
unsigned long flags, struct file *file, long pages) { } #endif /* CONFIG_PROC_FS */ |
12d6f21ea x86: do not PSE o... |
1471 |
#ifdef CONFIG_DEBUG_PAGEALLOC |
12d6f21ea x86: do not PSE o... |
1472 |
extern void kernel_map_pages(struct page *page, int numpages, int enable); |
8a235efad Hibernation: Hand... |
1473 1474 1475 |
#ifdef CONFIG_HIBERNATION extern bool kernel_page_present(struct page *page); #endif /* CONFIG_HIBERNATION */ |
12d6f21ea x86: do not PSE o... |
1476 |
#else |
1da177e4c Linux-2.6.12-rc2 |
1477 |
static inline void |
9858db504 [PATCH] mm: locks... |
1478 |
kernel_map_pages(struct page *page, int numpages, int enable) {} |
8a235efad Hibernation: Hand... |
1479 1480 1481 |
#ifdef CONFIG_HIBERNATION static inline bool kernel_page_present(struct page *page) { return true; } #endif /* CONFIG_HIBERNATION */ |
1da177e4c Linux-2.6.12-rc2 |
1482 |
#endif |
31db58b3a mm: arch: make ge... |
1483 |
extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm); |
1da177e4c Linux-2.6.12-rc2 |
1484 |
#ifdef __HAVE_ARCH_GATE_AREA |
cae5d3903 mm: arch: rename ... |
1485 |
int in_gate_area_no_mm(unsigned long addr); |
83b964bbf mm: arch: make in... |
1486 |
int in_gate_area(struct mm_struct *mm, unsigned long addr); |
1da177e4c Linux-2.6.12-rc2 |
1487 |
#else |
cae5d3903 mm: arch: rename ... |
1488 1489 |
int in_gate_area_no_mm(unsigned long addr); #define in_gate_area(mm, addr) ({(void)mm; in_gate_area_no_mm(addr);}) |
1da177e4c Linux-2.6.12-rc2 |
1490 |
#endif /* __HAVE_ARCH_GATE_AREA */ |
8d65af789 sysctl: remove "s... |
1491 |
int drop_caches_sysctl_handler(struct ctl_table *, int, |
9d0243bca [PATCH] drop-page... |
1492 |
void __user *, size_t *, loff_t *); |
a09ed5e00 vmscan: change sh... |
1493 |
unsigned long shrink_slab(struct shrink_control *shrink, |
1495f230f vmscan: change sh... |
1494 1495 |
unsigned long nr_pages_scanned, unsigned long lru_pages); |
9d0243bca [PATCH] drop-page... |
1496 |
|
7a9166e3b [PATCH] Fix undef... |
1497 1498 1499 |
#ifndef CONFIG_MMU #define randomize_va_space 0 #else |
a62eaf151 [PATCH] x86_64: A... |
1500 |
extern int randomize_va_space; |
7a9166e3b [PATCH] Fix undef... |
1501 |
#endif |
a62eaf151 [PATCH] x86_64: A... |
1502 |
|
045e72acf fix 'dynreloc mis... |
1503 |
const char * arch_vma_name(struct vm_area_struct *vma); |
03252919b x86: print which ... |
1504 |
void print_vma_addr(char *prefix, unsigned long rip); |
e6e5494cb [PATCH] vdso: ran... |
1505 |
|
9bdac9142 sparsemem: Put me... |
1506 1507 1508 1509 1510 |
void sparse_mem_maps_populate_node(struct page **map_map, unsigned long pnum_begin, unsigned long pnum_end, unsigned long map_count, int nodeid); |
98f3cfc1d memory hotplug: H... |
1511 |
struct page *sparse_mem_map_populate(unsigned long pnum, int nid); |
29c71111d vmemmap: generify... |
1512 1513 1514 1515 |
pgd_t *vmemmap_pgd_populate(unsigned long addr, int node); pud_t *vmemmap_pud_populate(pgd_t *pgd, unsigned long addr, int node); pmd_t *vmemmap_pmd_populate(pud_t *pud, unsigned long addr, int node); pte_t *vmemmap_pte_populate(pmd_t *pmd, unsigned long addr, int node); |
8f6aac419 Generic Virtual M... |
1516 |
void *vmemmap_alloc_block(unsigned long size, int node); |
9bdac9142 sparsemem: Put me... |
1517 |
void *vmemmap_alloc_block_buf(unsigned long size, int node); |
8f6aac419 Generic Virtual M... |
1518 |
void vmemmap_verify(pte_t *, int, unsigned long, unsigned long); |
29c71111d vmemmap: generify... |
1519 1520 1521 |
int vmemmap_populate_basepages(struct page *start_page, unsigned long pages, int node); int vmemmap_populate(struct page *start_page, unsigned long pages, int node); |
c2b91e2ee x86_64/mm: check ... |
1522 |
void vmemmap_populate_print_last(void); |
8f6aac419 Generic Virtual M... |
1523 |
|
6a46079cf HWPOISON: The hig... |
1524 |
|
82ba011b9 HWPOISON: Turn re... |
1525 1526 1527 |
enum mf_flags { MF_COUNT_INCREASED = 1 << 0, }; |
6a46079cf HWPOISON: The hig... |
1528 |
extern void memory_failure(unsigned long pfn, int trapno); |
82ba011b9 HWPOISON: Turn re... |
1529 |
extern int __memory_failure(unsigned long pfn, int trapno, int flags); |
ea8f5fb8a HWPoison: add mem... |
1530 |
extern void memory_failure_queue(unsigned long pfn, int trapno, int flags); |
847ce401d HWPOISON: Add unp... |
1531 |
extern int unpoison_memory(unsigned long pfn); |
6a46079cf HWPOISON: The hig... |
1532 1533 |
extern int sysctl_memory_failure_early_kill; extern int sysctl_memory_failure_recovery; |
facb6011f HWPOISON: Add sof... |
1534 |
extern void shake_page(struct page *p, int access); |
6a46079cf HWPOISON: The hig... |
1535 |
extern atomic_long_t mce_bad_pages; |
facb6011f HWPOISON: Add sof... |
1536 |
extern int soft_offline_page(struct page *page, int flags); |
6a46079cf HWPOISON: The hig... |
1537 |
|
718a38211 mm: introduce dum... |
1538 |
extern void dump_page(struct page *page); |
47ad8475c thp: clear_copy_h... |
1539 1540 1541 1542 1543 1544 1545 1546 |
#if defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLBFS) extern void clear_huge_page(struct page *page, unsigned long addr, unsigned int pages_per_huge_page); extern void copy_user_huge_page(struct page *dst, struct page *src, unsigned long addr, struct vm_area_struct *vma, unsigned int pages_per_huge_page); #endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_HUGETLBFS */ |
c0a32fc5a mm: more intensiv... |
1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 |
#ifdef CONFIG_DEBUG_PAGEALLOC extern unsigned int _debug_guardpage_minorder; static inline unsigned int debug_guardpage_minorder(void) { return _debug_guardpage_minorder; } static inline bool page_is_guard(struct page *page) { return test_bit(PAGE_DEBUG_FLAG_GUARD, &page->debug_flags); } #else static inline unsigned int debug_guardpage_minorder(void) { return 0; } static inline bool page_is_guard(struct page *page) { return false; } #endif /* CONFIG_DEBUG_PAGEALLOC */ |
1da177e4c Linux-2.6.12-rc2 |
1563 1564 |
#endif /* __KERNEL__ */ #endif /* _LINUX_MM_H */ |